Dr. David S. Atlas, MD
- Medicare services, 2024
- 378
- Medicare patients, 2024
- 168
- Part D claims, 2024
- 347
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 2320 E 93rd St, Chicago, IL 60617
- Practice phone
- Call (773) 967-5002
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Atlas' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. David S. Atlas is a gastroenterologist in Chicago, Illinois
Dr. Atlas practices at Advocate Trinity Hospital in Chicago, Illinois, part of Advocate Health.
Dr. Atlas' NPI, 1952375636, was assigned on February 17, 2006. Dr. Atlas graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2004. Dr. Atlas holds Illinois license 036120786.
- NPI
- 1952375636NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183658198
- NPI enumeration date
- February 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 967-5002
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David S. Atlas practices at Advocate Trinity Hospital in Chicago, Illinois
Dr. Atlas' primary practice is Advocate Trinity Hospital, at 2320 E 93rd St, Chicago, IL 60617 in Cook County. The practice phone is (773) 967-5002.
- Advocate Trinity Hospital2320 E 93rd St, Chicago, IL 60617 · Cook CountyPhone(773) 967-5002
Source: Dmand AI Affiliation Data
Dr. David S. Atlas is affiliated with 3 sites of care and 1 medical group
Dr. Atlas' primary practice is Advocate Trinity Hospital in Chicago, Illinois, part of Advocate Health. Dr. Atlas is also affiliated with UChicago Medicine Ingalls Memorial Hospital. The medical group on file is UChicago Medicine Medical Group. Dmand AI also links Dr. Atlas to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David S. Atlas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Atlas practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Trinity Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Advocate Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David S. Atlas is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Atlas' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Atlas is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Atlas' licenses on file in 2 states: Illinois and Minnesota.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
- Minnesota license
Clinical focus
Dmand AI lists acid reflux, colonoscopy, gastroenteritis, gastrointestinal bleeding and upper GI endoscopy among the conditions Dr. Atlas treats.
Gastroenterologists near Dr. Atlas
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David S. Atlas billed Medicare for 378 services in 2024
CMS data shows 378 Medicare services from Dr. Atlas across 9 procedure codes in 2024, for 168 Medicare patients. Medicare paid $36,559 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Atlas' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2832024: 2705%
- Surgery
- 2023: 1112024: 1083%
Dr. Atlas compared with the Illinois median for gastroenterologists, 2024
- Dr. Atlas
- Illinois median
- Medicare services
- 378vs 49824% below
- Medicare patients
- 168vs 30745% below
- Part D claims
- 298vs 37019% below
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Atlas' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Atlas?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Atlas and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David S. Atlas treated 168 Medicare patients in 2024, average age 73
CMS counts 168 Medicare patients who saw Dr. Atlas in 2024. The largest group is 65 to 74, with 63 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 2.94, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Atlas' median patient age at 66, with 62% women.
Dr. Atlas' Medicare patients by age, 2024
Dr. Atlas' Medicare patients by sex, 2024
- Women9456%
- Men7444%
Chronic conditions among Dr. Atlas' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease63%
- Diabetes58%
- Heart failure54%
- Arthritis53%
- Ischemic heart disease48%
- COPD33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Atlas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David S. Atlas wrote 347 Medicare Part D claims in 2024
In 2024, Dr. Atlas wrote 347 Medicare Part D claims for 217 patients. 67% of them were for generic drugs. CMS names the drug for 298 of them, across 4 drugs with 11 or more claims each, at $5,031 in total drug cost. In 2023, CMS named 294 claims across 5 drugs.
Dr. Atlas' Part D claims by kind of drug, 2024
- Generic234 claims67%
- Brand-name113 claims33%
Dr. Atlas' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Atlas' Part D claims, 2024
- Antibiotics21%72 of 347 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2942024: 2981%
Drugs named by CMS: 4 in 2024, 5 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. David S. Atlas ranks in the 80th percentile for colonoscopy in Medicare
Dr. Atlas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 100 procedures of colonoscopy by Dr. Atlas, more than 80% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Atlas ranks in Medicare procedure volume
- Colonoscopy
- 80th percentile100 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 60th percentile42 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. David S. Atlas has 1 publication on record
Dmand AI links 1 paper to Dr. Atlas.
Recent publications by Dr. Atlas
See who Dr. Atlas researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Atlas works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David S. Atlas received $844 in industry payments from 2016 to 2025
CMS Open Payments shows 26 general payments to Dr. Atlas from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 92% of the total. Abbvie Inc. paid the most, $286.
General payments to Dr. Atlas by program year, 2016 to 2025
General payments to Dr. Atlas by kind, 2016 to 2025
- Food and beverage$78092%
- Consulting fees$546%
- Education$101%
Companies that paid Dr. Atlas the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David S. Atlas graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Atlas graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2004.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. David S. Atlas accepts plans from 12 insurance carriers
Dr. Atlas is in network with 12 carriers, including Aetna, HCSC and Cigna. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- HCSC
- Cigna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Humana
- Blue Cross Blue Shield of Massachusetts
- +4 more carriersWith a free account
Plan types Dr. Atlas accepts, by number of carriers
- PPO10
- Medicare9
- HMO8
- POS5
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. David S. Atlas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. David S. Atlas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. David S. Atlas' NPI number?
Dr. David S. Atlas' NPI number is 1952375636. It was assigned on February 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David S. Atlas?
Dr. David S. Atlas is a gastroenterologist in Chicago, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. David S. Atlas practice?
Dr. Atlas practices at 2320 E 93rd St, Chicago, IL 60617. Dr. Atlas' primary practice is Advocate Trinity Hospital in Chicago, Illinois, part of Advocate Health. Dmand AI also links Dr. Atlas to 1 group practice or clinic.
What is Dr. David S. Atlas' office phone number?
The practice phone on file for Dr. Atlas is (773) 967-5002.
What is Dr. David S. Atlas' medical license number?
Dr. Atlas holds Illinois license 036120786, one of the licenses on file in 2 states.
Which states has Dr. David S. Atlas been licensed in?
Dmand AI has state licenses on file for Dr. Atlas in Illinois (2008 to 2026) and Minnesota (2005 to 2012).
Which hospitals is Dr. David S. Atlas affiliated with?
Dr. Atlas practices at Advocate Trinity Hospital in Chicago, Illinois. Dr. Atlas is also affiliated with UChicago Medicine Ingalls Memorial Hospital.
What medical group is Dr. David S. Atlas part of?
Dr. Atlas is linked to UChicago Medicine Medical Group.
Does Dr. David S. Atlas accept Medicare?
Yes. CMS data shows Dr. Atlas billed Medicare for 378 services in 2024, and Dr. Atlas accepts Medicare assignment.
How many Medicare patients does Dr. David S. Atlas see?
CMS counts 168 Medicare patients who saw Dr. Atlas in 2024, with an average age of 73.
Show 8 more questionsShow fewer questions
Is Dr. David S. Atlas board certified?
Yes. Dr. Atlas is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. David S. Atlas bill to Medicare?
In 2024, Dr. Atlas' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99223) and hospital inpatient care (99231).
Where did Dr. David S. Atlas go to medical school?
Dr. Atlas graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2004.
What drugs does Dr. David S. Atlas prescribe most?
In 2024 Medicare Part D data, Dr. Atlas' most prescribed drugs by claims were Peg 3350-Electrolyte, Omeprazole and Doxycycline Monohydrate.
Has Dr. David S. Atlas received payments from drug or device companies?
CMS Open Payments shows $844 in general payments to Dr. Atlas from 13 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. David S. Atlas been practicing?
Dr. Atlas graduated from medical school in 2004, 22 years ago.
Does Dr. David S. Atlas do research?
Dmand AI links 1 publication to Dr. Atlas.
What insurance does Dr. David S. Atlas accept?
Dr. Atlas is in network with 12 carriers, including Aetna, HCSC and Cigna. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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